Aharonov-Bohm effect in many-electron quantum rings
Strongly Correlated Electrons
2010-06-22 v2 Mesoscale and Nanoscale Physics
Abstract
The Aharonov-Bohm effect is investigated in two-dimensional, single-terminal quantum rings in magnetic fields by using time-dependent density-functional theory. We find multiple transport loops leading to the oscillation periods of h/(en), where n is the number of loops. We show that the Aharonov-Bohm oscillations are relatively weakly affected by the electron-electron interactions, whereas the ring width has a strong effect on the characteristics of the oscillations. Our results propose that in experimental quantum-ring devices showing clear Aharonov-Bohm oscillations the electron current is dominated by a few states along narrow conduction channels.
Cite
@article{arxiv.1003.1330,
title = {Aharonov-Bohm effect in many-electron quantum rings},
author = {V. Kotimaki and E. Rasanen},
journal= {arXiv preprint arXiv:1003.1330},
year = {2010}
}